440 not running right

[Grancoupe]

you're gonna need to come up with some more details regarding when it happened. Was it after sitting for a while. After running it hard? Did you change anything and then it started? This might prevent tearing into a motor when not needed.  Also is anything seem like its spitting out the intake or the exhaust? Popping maybe? Have headers on the motor. If you can get to a heat gun you can take a reading on each tube and see if one is cool. That one is missing. Or you have ten fingers. Do like i did once at the track. Burned eight fingers touching the runners cause I lost a plug and needed to figure out which one it was. LOL

[barryv]

all header tubes are hot,fingers hurt .occasional pop from exhaust.car is started weekly .nothing was changed when prblem started im going to check for vac leak this weekend,thanks

[71chally416]

A random misfire might be something stupid, like condensation inside the distributor cap or wires crossed over each other arcing.

[Grancoupe]

how often do yougo through a tank of fuel? Might be bad gas that is not firing on all cylinders

[barryv]

car doesnt drive,no tranny. ive tried running it through gas can but still runs crappy